12694663670 has 16 divisors (see below), whose sum is σ = 24608117520. Its totient is φ = 4687260384.

The previous prime is 12694663661. The next prime is 12694663679. The reversal of 12694663670 is 7636649621.

It is an interprime number because it is at equal distance from previous prime (12694663661) and next prime (12694663679).

It is a super-2 number, since 2×12694663670² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12694663679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48825500 + ... + 48825759.

It is an arithmetic number, because the mean of its divisors is an integer number (1538007345).

Almost surely, 2^12694663670 is an apocalyptic number.

12694663670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12694663670 is a deficient number, since it is larger than the sum of its proper divisors (11913453850).

12694663670 is a wasteful number, since it uses less digits than its factorization.

12694663670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97651279.

The product of its (nonzero) digits is 1959552, while the sum is 50.

The spelling of 12694663670 in words is "twelve billion, six hundred ninety-four million, six hundred sixty-three thousand, six hundred seventy".